The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2015
Filed:
Apr. 19, 2011
Keiji Wakahara, Yokohama, JP;
Nobuyuki Fujikura, Yokohama, JP;
Masanari Yamazaki, Yokohama, JP;
Masayuki Watanabe, Yokohama, JP;
Yoshinori Okuyama, Yokohama, JP;
Keiji Wakahara, Yokohama, JP;
Nobuyuki Fujikura, Yokohama, JP;
Masanari Yamazaki, Yokohama, JP;
Masayuki Watanabe, Yokohama, JP;
Yoshinori Okuyama, Yokohama, JP;
JP STEEL PLANTECH CO., Yokohama-shi, JP;
Abstract
A waste heat recovery structure includes a first exhaust gas flow path provided to each of steel making electric arc furnaces to discharge exhaust gas thereinto; a waste heat boiler disposed on the first exhaust gas flow path to recover waste heat as saturated steam from exhaust gas; a steam accumulator configured to store steam formed by confluence of saturated steam parts, each generated by the waste heat boiler; a steam super heater configured to turn steam into superheated steam by heating; a second exhaust gas flow path configured to lead exhaust gas from the waste heat boiler to the steam super heater to use it for superheating; a third exhaust gas flow path configured to discharge exhaust gas from the waste heat boiler not through the steam super heater; and a switching device configured to switch flow paths between the second and third exhaust gas flow paths.